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Philips Sonicare E-Series Replacement Brush Heads (2-Pack) for $17.69 Shipped

Philips Sonicare E-Series Replacement Brush Heads (2-Pack) for $17.69 shipped after selecting Subscribe & Save to get an extra 15% and free shipping.  The subscription can be canceled at any time with a few quick clicks with no obligation after your order ships.  Here is a screenshot for your reference.  Most places have it for about $29.